package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.ItemSaleAttrsVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.nio.channels.SelectionKey;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    private SkuImagesService imagesService;
    @Autowired
    private SpuInfoService spuInfoService;
    @Autowired
    private SpuInfoDescService spuInfoDescService;
    @Autowired
    private AttrGroupService attrGroupService;
    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;
    @Autowired
    private ThreadPoolExecutor threadPoolExecutor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        save(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        /**
         * key:
         *         catelogId: 0
         *         brandId: 0
         *         min: 0
         *         max: 0
         */
        String key = (String)params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("sku_id",key).or().like("sku_name",key);
            });
        }
        String catelogId = (String)params.get("catelogId");
        if (!StringUtils.isEmpty(key) && !"0".equals(catelogId)){

            wrapper.eq("catalog_id",catelogId);
        }
        String brandId = (String)params.get("brandId");
        if (!StringUtils.isEmpty(key) && !"0".equals(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String min = (String)params.get("min");
        String max = (String)params.get("max");
        if (!StringUtils.isEmpty(min)){
            wrapper.ge("price",min);
        }


        if (!StringUtils.isEmpty(max)){
           try {
               BigDecimal bigDecimal = new BigDecimal(max);
               if (bigDecimal.compareTo(BigDecimal.ZERO)==1) {
                   wrapper.le("price",max);
               }
           }catch (Exception e){
               e.printStackTrace();
           }
        }

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);

    }

    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        return lambdaQuery().eq(SkuInfoEntity::getSpuId,spuId).list();
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {

        SkuItemVo skuItemVo = new SkuItemVo();


        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(()->{
            // 1、sku基本信息获取 pms_sku_info
            SkuInfoEntity skuInfoEntity = getById(skuId);
            skuItemVo.setSkuInfo(skuInfoEntity);
            return skuInfoEntity;
        },threadPoolExecutor);

        CompletableFuture<Void> salAttrFuture = infoFuture.thenAcceptAsync((resSkuInfo) -> {
            Long spuId = resSkuInfo.getSpuId();
            // 3、获取spu的销售属性组合。
            List<ItemSaleAttrsVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(spuId);
            skuItemVo.setSaleAttr(saleAttrVos);
        }, threadPoolExecutor);

        CompletableFuture<Void> descFuture =  infoFuture.thenAcceptAsync((resSkuInfo)->{
            Long spuId = resSkuInfo.getSpuId();
            // 4、获取spu的介绍
            SpuInfoDescEntity descEntity = spuInfoDescService.getById(spuId);
            skuItemVo.setDesc(descEntity);
        },threadPoolExecutor);

        CompletableFuture<Void> groupAttrFuture = infoFuture.thenAcceptAsync((resSkuInfo) -> {
            Long spuId = resSkuInfo.getSpuId();
            Long catalogId = resSkuInfo.getCatalogId();
            // 5、 获取spu的规格参数信息
            List<SpuItemAttrGroupVo> groupAttrs = attrGroupService.getAttrGroupWithAttrsBySpuId(spuId, catalogId);
            skuItemVo.setGroupAttrs(groupAttrs);
        }, threadPoolExecutor);

        CompletableFuture imageFuture = CompletableFuture.runAsync(()->{
            // 2、sku的图片信息  pms_sku_images
            List<SkuImagesEntity> images = imagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        },threadPoolExecutor);

        // 等到
        CompletableFuture.allOf(salAttrFuture,descFuture,groupAttrFuture,imageFuture).get();

        return skuItemVo;
    }


}